Well, my 258 took a crap on me, blew a piston ring and is blowing smoke like crazy. So, jeep mentality why not make it stronger and better, so I decided to swap in a 4.0L. I've been doing the research and am trying to compile a list of what I need from the donor. I'm not trying to make another 4.0 swap but this is what i have so far.
Engine w/ all belt driven accessories, hoses and what not
Wiring harness and all electronics from firewall
Computer
VSS from 91 Wrangler *crosses fingers*
OBDII connector (if i decide against OBD1, haven't decided yet)
Please tell me if I'm missing anything.

Now for the fun part, since the weakling T-4 also has 188k on it, I want to swap that while I'm there. I've been doing some researching and the SM465 seems like the way to go. I'm under the impression I can use the bellhousing from the 4.0L with some modification?

Has anyone done this swap in a CJ-7? Btw, I plan on replacing the rear axle with a Ford 9" rear that a friend has built and welded a truss on the housing. I have yet to research a new front, although am looking for a IH scout to rob the D44s from.

I thought about that, don't know the availability of a 360 around here plus I was hoping to go fuel injected without to much extra cost on the engine build. Although it would give me reason for the Motorcraft 2100 that came in a day after I blew the piston ring.

No i think you are reading the website wrong. The website states that no bellhousing from after 86 will mate up, But the 4.0 and 4.2 have the same bolt patern I believe. So this is a very ease swap to do the t150 bellhouse should bolt up to you 4.0

i am currently performing the sm465 conversion on my 4.0 powered 84 cj7. novak sells the transfer case adaption kits but you must drill and tap your stock bell housing to make it bolt up to your transmission, also the stock front bearing retainer/sleeve on the 465 would have to be modified or purchased from novak, the late model 465 has a longer main shaft and novak also sells new shorter early model main shafts for the particular conversion.

I have the SM464 mated to my 4.2, love it!
You can either have a shop take a lathe and turn down the input bearing retainer... Or you can have the bellhousings hole turned out to fit the Sm465 retainer... which is what I did.
I took the bellhousing to a shop where they drilled and tapped the holes, and turned out the center for me, I marked where they needed to drill, and gave them the diameter the hole needed to be enlarged to.

Once under the jeep, I saw I needed to shorten the transmission stabilizer arm by a few inches so it would clear the exhaust, and drill new holes for it to remount it to the skidplate.
Also had to cut out a small front section of the skid plate for the front of the Sm465 as it hangs a bit lower than the weeny little T5.
I can post pics if you'd like.

All in all, it was a pretty easy swap, the hardest part being cutting the skidplate, no biggie with the right tools. And the fact that the Sm465 weighs 195lbs.... where's the aluminum T5 weighs 90lbs... lol

i am currently performing the sm465 conversion on my 4.0 powered 84 cj7. novak sells the transfer case adaption kits but you must drill and tap your stock bell housing to make it bolt up to your transmission, also the stock front bearing retainer/sleeve on the 465 would have to be modified or purchased from novak, the late model 465 has a longer main shaft and novak also sells new shorter early model main shafts for the particular conversion.

I have the novak conversion front bearing retainer kit sitting on my shelf because I changed drivetrain plans mid build. PM me if interested, I'll let it go for alot less than I paid for it, its just sitting here.